Chemistry - CHEMICAL BONDING Question with Solution | TestHub

A) The statement is correct

B) ${\mathrm{AlF}}_3$ is ionic with more lattice energy. So it will act as weaker Lewis acid than ${\mathrm{AlCl}}_3$

C) Due to small size of ${\mathrm{F}}^{-},{\mathrm{Al}}^{3+}$ can form six coordinate complexes $AI{F}_6^{3-}$ but cannot stop at $AI{F}_4^{-}$since the positive charge developed on aluminium atom increases with increase in number of more electronegative F atoms.

D) Due to larger size of ${\mathrm{Cl}}^{-}$there will be steric hindrance so cannot form ${\mathrm{AlCl}}_6^{3-}$ ion.